Small Quiz

Enquiry From

3

QUESTION 1

The distance between two cities M and N is 330km. A train starts from M at 8 AM. and travels towards N at 60 km/hr. Another train starts from N at 9 AM. and travels towards M at 75 km/hr. At what time do they meet?

QUESTION 3

Two TRUCKS of equal lengths take 10 seconds and 15 seconds respectively to cross a LAMP post. If the length of each TRUCK be 300 metres, in what time will they cross each other travelling in opposite direction?

QUESTION 5

Two friends RAHIM and PIHU are travelling from point A to B, which are 600km apart. Travelling at a certain speed RAHIM takes 1hr more than PIHU to reach point B. If RAHIM doubles his speed he will take 1hr 30mins less than PIHU to reach point B. At what speed was RAHIM driving from point A to B?

QUESTION 7

If a BUS runs at 45km/hr, it reaches its destination late by 10 mins but if runs at 60km/hr it is late by 4min. What is the correct time for the journey?

16

10

12

8

14

Distance = diff in time *(S1*S2)/S1-S2
D=[10-4]/60hr * (45*60)/[60-45] = 6/60 * 45*60/15 ==>18km
time T=D/S(take any one of the speed) 18/45 =2/5hrs = 2/5*60=24min
then correct time is 24-10=14mins

QUESTION 8

Two BUSES starts at the same time from MATHURA and RACHI and proceed towards each other at the rate of 40km/hr and 37 1/2km/hr. When they meet it is found that one BUS has traveled 200km more than the other BUS. What is the distance between MATHURA and RACHI?

QUESTION 9

Two cars start at same time from KOLKATA and Mangalore, which are 250km apart. If the two cars travel towards each other, they meet after 1hr and if they travel in same direction they meet after 5hrs. What is the speed of the car starts from KOLKATA if it is know that the one which started from KOLKATA has more speed than the other one?

100

170

140

150

120

Here we have two speeds. We get 2 equations as.
250/1hr = K+M—-1

250/5hr = K-M—-2
solving 2 eqn K=150km/hr.

QUESTION 10

Car M leaves the city at 5pm and is driven at a speed of 30km/hr. 3hrs later another car N leaves the city in the same direction as car M. In how much time will car N be 12kms ahead of car M if the speed of car N is 50km/hr?